Collinsville MA WWT - Municipal Wastewater Treatment Plant in Collinsville, Oklahoma

Collinsville MA WWT is a municipal wastewater treatment facility located in Collinsville, Oklahoma, a community in Tulsa County. The plant serves a population of about 4,072 residents, placing it in the small-agglomeration category under US regulatory standards. Its location inland, over 50 km from the coast, shapes its discharge and environmental management approach. As a US-based plant, Collinsville MA WWT operates under the Clean Water Act, administered by the Oklahoma Department of Environmental Quality. Facilities of this size typically require secondary treatment as a minimum, with NPDES permits setting effluent limits based on the receiving water body's assimilative capacity. Regulatory compliance ensures protection of local water quality. The plant discharges into a local water body within the Arkansas River basin, which ultimately drains into the Mississippi River and the Gulf of Mexico. This connection highlights the plant's role in maintaining downstream water quality, supporting aquatic ecosystems and regional water resources.

The plant's discharge enters a tributary of the Arkansas River, part of the Mississippi River watershed that flows to the Gulf of Mexico. This inland location reduces direct marine impact but requires careful management to protect freshwater ecosystems. The region supports diverse aquatic life and provides water for agricultural and municipal use downstream.